fixing carousel css

There was a css conflict with the class .carousel because that class is being used inside the Lightbox as well.  See screenshot for issue.  

I fixed it by replacing .carousel with .carousel-wrapper but I'm open to suggestions for other solutions. 

![screen shot 2014-01-27 at 11 30 51 am](https://f.cloud.github.com/assets/201367/2012538/9901e3ea-8789-11e3-871a-d54ca293f2c6.png)